So I was training delts, When i moved over to the rear delt machine I tried to do it with palms facing outwards, like Ronnie does them. I had a long time to do them this way.

Apparently the weight was too heavy, I had 10 reps with the said weight, when in the 4th rep I felt like my right delt poped and made a cracking noise...they handles slipped from my hands and i just let them go...

During the training I did not experience any pain, I just proceeded to the next exersice.

Now, this morning my shoulder is aching a bit, nothing special but I feel it like "cracking" when i rotate it. Could this be an injury??

if its the joint its fuck all, my shoulders pop audibly when i stretch...much like some people pop there knuckles, just the fluid in joint popping

I felt like something poped...Im prety sure it was the joint...it poped/cracked and instantly lost control of the weight, my grip and strength gave up. Afterwards I moved on to the next excersice with little pain.

Today its aches when I rotate the shoulder and cracks unusually but it didnt bother me in my workout.

If the area is a very dark black & blue than you popped a ligament/muscle. If not, than probably a slight dislocated shoulder or muscle pull. If no nerve damage, than rest might be a good idea. Good luck.

I have experienced some issues with my right shoulder......whenever I move my shoulder up and down.....I hear a "clicking" noise......MRI showed nothing at all.....no tear whatsoever.....but I had to ease up on chest and shoulders for a couple of months.

You should be careful for a while with delts and chest.....sounds like your injury is similar to mine.

I also had trouble with my right shoulder. Itīs a real pain because every upper body EX effects your shoulders to some degree. I did physio but it did not help much. I found a good sport Doctor who showed me a simple ex in that you put a light ankle type weight on your wrist and let your arm relax and hang(donīt hold the weight in your hand). slowly rotate your arm in circles. It worked great for me.

like above, i like to do rotator warmups with chest and shoulders, i used to feel a pain in my left shoulder but i dont anymore using those warmups.

glad you're feeling better...if it was serious, i doubt you would be able to move to next exercise and also not feel major pain the next day. i was doing front squats few winters ago, was going up and felt two or three pop/clicks in my quad and NO WAY would I have been able to lift anymore let alone how hard it was to walk to car lol that shit hurt for weeks (luckly no bruising but should have warmed up more lol)

So I was training delts, When i moved over to the rear delt machine I tried to do it with palms facing outwards, like Ronnie does them. I had a long time to do them this way.

Apparently the weight was too heavy, I had 10 reps with the said weight, when in the 4th rep I felt like my right delt poped and made a cracking noise...they handles slipped from my hands and i just let them go...

During the training I did not experience any pain, I just proceeded to the next exersice.

Now, this morning my shoulder is aching a bit, nothing special but I feel it like "cracking" when i rotate it. Could this be an injury??

This happened to me on machine shoulder press.....tried to lift heavy after a long layoff and heard something go "crack" in my left shoulder....pain set in a few days later and got progressively worse to the point where I could not do shoulder exercises or bench presses..it affected all of my lifts and my poundages went way down..hurt like hell for months especially in bed at night when it was time to roll over.....so I started warming up very lightly before starting my lifts...used to start off heavy at 250 but had to start at 80 and work my way up progressively..this made things better but I still had a lot of pain....

so I had my daughter massage my shoulders two nights in a row and this helped tremendously...pain went away most days and now my poundages are back to where they were before...so I suggest warming up with very light weights first before each exercise and having someone massage the area for a few days